This was the challenge:
"Challenge Build #4: Matoran Strike!
The ones who compete will have to create a Matoran who is ready for fighting (example: heavy armor, many weapons), and is about 12cm high (not have to be exactly that size, but I don't want to see some Toa-sized Matoran)."
So that's what I did I think.I made Orgin Prox, he is a real soldier and ready for battle. Enjoy!